The Catechism in Questions & Answers

404. Who dispenses the sacraments in the church of Jesus Christ?

The dispensation of all the sacraments— Holy Baptism with water, Holy Communion, and Holy Sealing—has been entrusted to the Apostle ministry. The Apostles also dispense the sacraments for the departed.
Holy Sealing is only dispensed by Apostles.
In the New Apostolic Church, Holy Communion and Holy Baptism with water are also dispensed by priestly ministers by commission of the Apostles. Holy Baptism with water has been entrusted to the church as a whole: wherever baptisms are performed with water in the name of God, the Father, the Son, and the Holy Spirit, believing human beings are incorporated into the church of Christ.

Sacraments: see Question 472. Holy Sealing: see Question 440.